organized by the Institute of Thermomechanics of the CAS, v. v. i.,
every first Wednesday of the month at 10:00
in the Conference Room B in the main building of the Institute of Thermomechanics of the CAS, v. v. i. (see directions)
 

Contact persons: Dr. Radek Kolman, Dr. Hanuš Seiner

 

Wednesday, May 4, 2016, 10:00
 

 

Lecture outline:
Voice production is a complex physical process, which involves airflow coming from the lungs, selfoscillating vocal folds and acoustics of the resonance cavities of the human vocal tract. The vocal folds, excited by the airflow, generate a primary sound which propagates in the airways of the vocal tract modifying its spectrum and producing the final acoustic signal radiated from the mouth. Understanding basic principles of voice production is important for detection of laryngeal pathologies and treatment of laryngeal disorders. The physical models of voice production are important tools not only for experimental verification of computational 3D finite element models of phonation, but also for development of the vocal folds prosthesis. The study compares results of in vitro measurements of phonation characteristics performed on originally developed 1:1 scaled artificial models of human vocal folds. The measured aerodynamic, vibration and acoustic characteristics of the last models are comparable with the values found in humans.